@NotNull
 public static String getLibraryName(@NotNull Library library) {
   final String result = library.getName();
   if (result != null) {
     return result;
   }
   String[] endingsToStrip = {"/", "!", ".jar"};
   StringBuilder buffer = new StringBuilder();
   for (OrderRootType type : OrderRootType.getAllTypes()) {
     for (String url : library.getUrls(type)) {
       buffer.setLength(0);
       buffer.append(url);
       for (String ending : endingsToStrip) {
         if (buffer.lastIndexOf(ending) == buffer.length() - ending.length()) {
           buffer.setLength(buffer.length() - ending.length());
         }
       }
       final int i = buffer.lastIndexOf(PATH_SEPARATOR);
       if (i < 0 || i >= buffer.length() - 1) {
         continue;
       }
       String candidate = buffer.substring(i + 1);
       if (!StringUtil.isEmpty(candidate)) {
         return candidate;
       }
     }
   }
   assert false;
   return "unknown-lib";
 }
  protected String doCalculateSignature(PsiMethod method) {
    final StringBuilder buffer = new StringBuilder();
    final PsiModifierList modifierList = method.getModifierList();
    String modifiers = modifierList.getText();
    final String oldModifier = VisibilityUtil.getVisibilityModifier(modifierList);
    final String newModifier = getVisibility();
    String newModifierStr = VisibilityUtil.getVisibilityString(newModifier);
    if (!newModifier.equals(oldModifier)) {
      int index = modifiers.indexOf(oldModifier);
      if (index >= 0) {
        final StringBuilder buf = new StringBuilder(modifiers);
        buf.replace(
            index,
            index + oldModifier.length() + ("".equals(newModifierStr) ? 1 : 0),
            newModifierStr);
        modifiers = buf.toString();
      } else {
        if (!StringUtil.isEmpty(newModifierStr)) {
          newModifierStr += " ";
        }
        modifiers = newModifierStr + modifiers;
      }
    }

    buffer.append(modifiers);
    if (modifiers.length() > 0
        && !StringUtil.endsWithChar(modifiers, '\n')
        && !StringUtil.endsWithChar(modifiers, '\r')
        && !StringUtil.endsWithChar(modifiers, ' ')) {
      buffer.append(" ");
    }

    if (!method.isConstructor()) {
      final CanonicalTypes.Type type = getReturnType();
      if (type != null) {
        buffer.append(type.getTypeText());
      }
      buffer.append(" ");
    }
    buffer.append(getMethodName());
    buffer.append("(");

    final int lineBreakIdx = buffer.lastIndexOf("\n");
    String indent =
        StringUtil.repeatSymbol(
            ' ', lineBreakIdx >= 0 ? buffer.length() - lineBreakIdx - 1 : buffer.length());
    List<ParameterTableModelItemBase<ParameterInfoImpl>> items = myParametersTableModel.getItems();
    int curIndent = indent.length();
    for (int i = 0; i < items.size(); i++) {
      final ParameterTableModelItemBase<ParameterInfoImpl> item = items.get(i);
      if (i > 0) {
        buffer.append(",");
        buffer.append("\n");
        buffer.append(indent);
      }
      final String text = item.typeCodeFragment.getText();
      buffer.append(text).append(" ");
      final String name = item.parameter.getName();
      buffer.append(name);
      curIndent = indent.length() + text.length() + 1 + name.length();
    }
    // if (!items.isEmpty()) {
    //  buffer.append("\n");
    // }
    buffer.append(")");
    PsiTypeCodeFragment[] thrownExceptionsFragments = myExceptionsModel.getTypeCodeFragments();
    if (thrownExceptionsFragments.length > 0) {
      // buffer.append("\n");
      buffer.append(" throws ");
      curIndent += 9; // ") throws ".length()
      indent = StringUtil.repeatSymbol(' ', curIndent);
      for (int i = 0; i < thrownExceptionsFragments.length; i++) {
        String text = thrownExceptionsFragments[i].getText();
        if (i != 0) buffer.append(indent);
        buffer.append(text);
        if (i < thrownExceptionsFragments.length - 1) {
          buffer.append(",");
        }
        buffer.append("\n");
      }
    }

    return buffer.toString();
  }